I have SharePoint 2010 farm with one server. I'm developing some features in a sharepoint farm solution (not sandbox because there are some user rights problem). All feature scopes are set to "Site". I can deploy the solution to SharePoint with no problem. I added a new web front-end server to my existing farm. Then when I try deploy my solution, VS2010 shows this error:

Error occurred in deployment step
'Activate Features': Feature with Id
'xxx' is not installed in this farm,
and cannot be added to this scope

I login with AD administrator account to
development server.

Administrator
account is in site collection admins
on the target web application.